Changing the name of an app in Mountain Lion

[Borderdog]

I want to upgrade to Mavericks, but I still want to retain iTunes 10.
To do this according to some instructions I read this morning, it requires the renaming of the iTunes.app to something slightly different; like iTunes 10.app. So when you upgrade to Mavericks, the now-named iTunes 10.app will be overlooked and won't be automatically replaced with 11.
The problem I'm having is that OSX won't allow you any simple way to change the name of any of it's OS embedded apps such as iTunes, Preview, Safari, etc. I can change the name of any non-embedded apps by simply clicking once and then hitting the return key and then typing a new name.
I have tried everything from Get Info and seeing if I can change the name there. Also logged in as Root User- that didn't work either. I tried some command line things but I'm not very good with Terminal.

Any ideas from you Mac experts?

Thanks

 

[gmanterry]

Here's how I renames TexEdit.

I picked TextEdit to test. I option copied the app from the Applications folder to the Desktop. From the Desktop, select, hit return and rename. Then drag it back into the Applications folder.

Terry